EP 2039001 A2 20090325 - LOAD-LINE ADAPTATION
Title (en)
LOAD-LINE ADAPTATION
Title (de)
LADUNGSLINIEN-ANPASSUNG
Title (fr)
ADAPTATION DE LIGNE DE CHARGE
Publication
Application
Priority
- IB 2007052697 W 20070709
- EP 06117014 A 20060712
- EP 07805078 A 20070709
Abstract (en)
[origin: WO2008007330A2] According to the general concept disclosed herein a circuit for adaptive matching of a load impedance to a predetermined load-line impedance of a load-line connected to a power amplifier output comprises a fixed matching network between the power transistor and an adaptive matching network, whereby the fixed matching network acts as an impedance inverter which results in a relatively low insertion loss at high power. Results indicate that the impedance-inverting network can be used over more than a factor of 10 in impedance variation. Further, the usage of the fixed matching network, close to the power transistor, allows for the implementation of transmission zeros and/or for a well defined load impedance at a predetermined harmonic frequency, independent of the (variable) load impedance at the fundamental frequency.
IPC 8 full level
CPC (source: EP KR US)
H03F 1/56 (2013.01 - EP US); H03F 3/191 (2013.01 - EP US); H03H 7/40 (2013.01 - EP KR US); H03H 21/00 (2013.01 - KR); H03H 21/0001 (2013.01 - EP US); H04B 1/0458 (2013.01 - US); H03F 2200/387 (2013.01 - EP US); H03F 2200/391 (2013.01 - EP US); H03F 2200/451 (2013.01 - EP US); H03F 2200/471 (2013.01 - EP US)
Citation (search report)
See references of WO 2008007330A2
Designated contracting state (EPC)
DE FR IT
Designated extension state (EPC)
AL BA HR MK RS
DOCDB simple family (publication)
WO 2008007330 A2 20080117; WO 2008007330 A3 20080424; EP 2039001 A2 20090325; EP 2039001 B1 20140402; JP 2009543499 A 20091203; JP 5317969 B2 20131016; KR 101405338 B1 20140610; KR 20090039743 A 20090422; US 2009174496 A1 20090709; US 8436694 B2 20130507
DOCDB simple family (application)
IB 2007052697 W 20070709; EP 07805078 A 20070709; JP 2009519040 A 20070709; KR 20097002358 A 20070709; US 35068709 A 20090108